I do not know the seller, but it appears that they like to use the word “airborne” a little loosely. If the scope has provenance of airborne use, that should be provided.
I have an actual “airborne” No.32 Mk. I, but it is completely standard. Mine came from Pte. George Siggs of 1 CanadianParachute Battalion and it was a WWII souvenir of his. I have owned quite a lot of WWII airborne kit, quite a few No.4 (T) rifles, No.32, C No. 32 and C No.67 scopes and I have never come across any mention of any being special versions for airborne use. Mine is the only one that I know of that has airborne provenance, though there may be a few others. E.g. A sniper rifle was found at Arnhem hidden in a wall as I recall but I do not know if it had a scope with it. Sadly I suspect that well over 99% of No.32 scopes have no known detailed history (beyond country of manufacture and possibly country of use) and some even have invented “histories”.